Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2011

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

THE WILLIAMS COMPANIES, INC.
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
						Additions
						Charged
						(Credited)
				Beginning		To Costs and									Ending
				Balance		Expenses			Other			Deductions			Balance
				(Millions)
2011
	Allowance for doubtful accounts -
		accounts and notes receivable(b)	$	15	$	1		$	-		$	15	(g)	$	1
	Deferred tax asset valuation allowance(a)			249		(33)			-			71	(g)		145
2010
	Allowance for doubtful accounts -
		accounts and notes receivable(b)		22		(6)			-			1	(f)		15
	Deferred tax asset valuation allowance(a)			289		(40)			-			-			249
	Price-risk management credit reserves - liabilities(c)			(3)		3	(d)		-			-			-
2009
	Allowance for doubtful accounts -
		accounts and notes receivable(b)		29		4			-			11	(f)		22
	Deferred tax asset valuation allowance(a)			224		65			-			-			289
	Price-risk management credit reserves - assets(b)			6		(3)	(d)		(3)	(e)		-			-
	Price-risk management credit reserves - liabilities(c)			(15)		12	(d)		-			-			(3)

(a)	Deducted primarily from related assets, with a portion included in assets of discontinued operations.
(b)	Deducted from related assets, primarily included in assets of discontinued operations.
(c)	Deducted from related liabilities, included in liabilities of discontinued operations.
(d)	Included in income (loss) from discontinued operations.
(e)	Included in accumulated other comprehensive income (loss).
(f)	Represents balances written off, reclassifications, and recoveries.
(g)	Includes balance deductions due to the spin-off of our exploration and production business on December 31, 2011.